How severe is CVE-2026-34750?

CVE-2026-34750 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2026-34750 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-34750?

CVE-2026-34750 affects Payloadcms Payload. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-34750?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-34750 have an EU (EUVD) identifier?

Yes. CVE-2026-34750 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18019.

When was CVE-2026-34750 published?

CVE-2026-34750 was published on 2026-04-01 and last updated on 2026-06-17.

CVE-2026-34750

CVE-2026-34750 is a medium-severity vulnerability in Payloadcms Payload with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (33rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-18019
Weakness: CWE-22
Affected product: Payloadcms Payload
Published: 2026-04-01
Last modified: 2026-06-17

Description

Payload is a free and open source headless content management system. Prior to version 3.78.0 in @payloadcms/storage-azure, @payloadcms/storage-gcs, @payloadcms/storage-r2, and @payloadcms/storage-s3, the client-upload signed-URL endpoints for S3, GCS, Azure, and R2 did not properly sanitize filenames. An attacker could craft filenames to escape the intended storage location. This issue has been patched in version 3.78.0 for @payloadcms/storage-azure, @payloadcms/storage-gcs, @payloadcms/storage-r2, and @payloadcms/storage-s3.

Frequently asked questions

What is CVE-2026-34750?: Payload is a free and open source headless content management system. Prior to version 3.78.0 in @payloadcms/storage-azure, @payloadcms/storage-gcs, @payloadcms/storage-r2, and @payloadcms/storage-s3, the client-upload signed-URL endpoints for S3, GCS, Azure, and R2 did not properly sanitize filenames. An attacker could craft filenames to escape the intended storage location. This issue has been patched in version 3.78.0 for @payloadcms/storage-azure, @payloadcms/storage-gcs, @payloadcms/storage-r2, and @payloadcms/storage-s3.
How severe is CVE-2026-34750?: CVE-2026-34750 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2026-34750 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-34750?: CVE-2026-34750 affects Payloadcms Payload. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-34750?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-34750 have an EU (EUVD) identifier?: Yes. CVE-2026-34750 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18019.
When was CVE-2026-34750 published?: CVE-2026-34750 was published on 2026-04-01 and last updated on 2026-06-17.

References

https://github.com/payloadcms/payload/security/advisories/GHSA-frq9-7j6g-v74x

Affected products (1)

cpe:2.3:a:payloadcms:payload:*:*:*:*:*:node.js:*:*

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